It's no secret that Houston has had her own battles with drug addiction after much personal-turned-public turmoil and a stint in rehab in the early 2000s. But following photos that recently surfaced of Bobbi Kristina snorting cocaine, Houston is stepping up and stepping in.

According to the National Enquirer, in an attempt to save her Bobbi from repeating her own mistakes, Whitney 47, has reportedly canceled Bobbi Kristina's 18th birthday celebration at the Atlantis resort in the Bahamas, is taking back the Lexus she gave her daughter and is sending her straight to rehab.

Bobbi Kristina attempted to "damage control" the cocaine photos on Twitter recently, and now she's back to shoot down rehab rumors, tweeting, "Excuse me, but I'd like to say that I am NOT going to rehab? I'm perfectly healthy and I am not addicted to anything but life."

Houston credits her own mother, Cissy Houston, with saving her from her addiction to crack cocaine. Houston told Oprah in 2009 that her mother forced her to rehab after getting a court injunction that allowed her to stage an intervention with armed police at Houston's door in 2004.

Bobbi Kristina's father -- R&B bad boy and Houston's ex-husband, Bobby Brown has a drug history of his own, and his daughter seems to be following in both her parents' hard-partying footsteps. This isn't the first news of the famous offspring's teen troubles. Rumors have also recently surfaced of a Bobbi Kristina sex tape.

In 2008, the Enquirer reported that a then-15 Bobbi Kristina "tried to stab her mom during an argument -- and then attempted to kill herself by slashing her wrists."

On the flip side, NecoleBitchie.com writes that four years ago, "Whitney prohibited her then 14-year-old daughter from MySpace after photos of her supposedly drinking alcohol and smoking weed surfaced on the Internet." The site then displays photos of Bobbi Kristina blowing smoke and holding a red beer-pong style Solo cup.